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Defined Benefit Pension Plan (Tables)
 9 Months Ended
Jun. 30, 2017
Defined Benefit Pension Plan  
Schedule of net periodic benefit cost recognized
The net periodic benefit recognized for the three and nine months ended June 30, 2017 and 2016 included the following components:

 
 
Three Months Ended June 30,
 
Nine Months Ended June 30,
Qualified Defined Benefit Pension Plan
 
2017
 
2016
 
2017
 
2016
 
 
(dollars in thousands)
Service cost
 
$
—

 
$
—

 
$
—

 
$
—

Interest cost
 
148

 
205

 
436

 
634

Expected return on plan assets
 
(213
)
 
(271
)
 
(623
)
 
(823
)
Amortization of prior service cost
 
—

 
—

 
—

 
—

Amortization of actuarial (gain)/loss
 
—

 
—

 
—

 
—

Amortization of transitional obligation/(asset)
 
—

 
—

 
—

 
—

Total net periodic (benefit)
 
$
(65
)
 
$
(66
)
 
$
(187
)
 
$
(189
)